A respeito do extrativismo mineral, marque a alternativa correta. O Brasil é pobre em reservas minerais. O extrativismo mineral não gera impactos ambientais. O Brasil é rico em minérios como: nióbio, ferro, manganês e alumínio. No território brasileiro não há reserva de nióbio.

Answers

Answer 1

Answer:

O Brasil é rico em minerais como: nióbio, ferro, manganês e alumínio.

Explicação:

Altas reservas de nióbio, ferro, manganês e alumínio estão presentes no Brasil. O nióbio é um metal muito precioso e importante que é usado como ligas porque fornece resistência ao metal em uma temperatura muito baixa. É usado principalmente em foguetes porque a temperatura do espaço é muito baixa, cerca de -270 Celsius, o que é insuportável para o aço, então ele quebra, mas a liga com o nióbio o torna mais difícil nessa baixa temperatura. É por isso que o nióbio é um metal muito caro.


Related Questions

How are catastrophic events related to changes in geological timelines

Answers

They define geological periods because scientists use them as reference points for tracking the history of the earth. They cause significant changes that disrupt the equilibrium of the earth and lead to natural separation points.

In which mountain range can you find Rich Mountain the highest peak in Oklahoma Region? A. the Ouachita Mountains B. the Ozark Mountains C. the Wichita Mountains D. the Arbuckle Mountains

Answers

The Ouachita Mountains

Answer:

A.) the Ouachita Mountains

Geoscientists use ___________ to explore the deep layers of the Earth that humans can not yet dig down into. Geoscientists obtain seismic data from: (Mark All that Apply).the tides human-induced explosions naturally occurring earthquakes the coriolis force How are Earthquakes Measured? Magnitude Scale Richter Scale Fujita Scale Saffir-Simpson Scale The outer brittle shell of the Earth is the ______ that forms the "skin" of the lithosphere. mantle outer core inner core crustWhat is the deepest that humans have been able to dig into Earth? 7.6 miles 16.2 miles 1.7 miles 170.2 miles Streams of charged particles ejected from the sun are called ____________. electromagnetic storms magnetosphere radio waves solar wind

Answers

Answer:

1) SEISMIC WAVES

Explanation:

Geo scientists use SEISMIC WAVES to explore the deep layers of the earth. Geologists use seismic waves to explore the inner core of the earth. hope this helps you :)  

Which of the following is correct about floodplains? Which of the following is correct about floodplains? Floodplains are not associated with deposition. They are generally filled with layers of alluvium. Despite the name, they are rarely subjected to flooding. They are well drained throughout. They are an erosional feature located within a depositional feature.

Answers

They are generally filled with layers of. the following is correct about floodplains. Thus option (A) is correct.

What are floodplains?

A bottomland, floodplain, or floodplain is a region of land next to a river that runs from the channel's banks to the foot of the valley's surrounding walls and is subject to flooding during times of high discharge. The soils are typically made up of clays, silts, sands, and that have been left behind by floods.

Floodplains frequently have high soil fertility because regular flooding can deposit nutrients and water; some significant agricultural regions, such as the Mississippi river basin and the Nile, heavily rely on the floodplains.

The Mississippi River has a large floodplain covering large portions of midwestern states through which it flows. Ninety percent of this area is no longer flooded annually due to levees designed to hold the water back.

Therefore, option (A) is correct.

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Why is the water colder on the southwest coast of the United States, yet the northeast coast has warmer water?

Answers

Answer:

Because of climate change and how close things are to the equator

Explanation:

five examples of internal and external layers of the structure of the earth {5marks}

Answers

Answer:

5 examples of internal structure of the earth are:

1) Crust.

2) Upper Mantle.

3) Lower Mantle.

4) Outer Core.

5) Inner Core.

5 examples of external structures of the earth are:

1) Exosphere.

2) Thermosphere.

3) Mesosphere.

4) Stratosphere.

5) Troposphere.

Which of the following is the best description of a cul-de-sac?
A a suburban park in a natural setting
B a dead-end street in a residential neighborhood
C a small group of houses built on a large tract of farmland
D an architectural design favored by French immigrants to the US
Please select the best answer from the choices provided.

Answers

Answer:

The Answer is D.) an architectural design favored by French immigrants to the US

Explanation:

Answer:

D

Explanation:

Porosity increases:_________. a. when grains settle more closely together after deposition.b. with increasing crystallization between grains in sedimentary rock. c. with the cementing of sediments by minerals from groundwater. d. when rocks develop joints or fractures.

Answers

Answer:

The correct solution is Option d (when rocks develop joints or fractures ).

Explanation:

Porosity is observable from descriptive samples taken. The drawbacks of receivable dams are that this is impossible to make true reflection temperature measurements, specific side-wall concrete samples while being often valuable can also result in poor coverage as well as dependence on log-derived porosity seems to have become the standard.As porosity rises, too much wind needs to pass further through most of the shelterbelt, which would be to say the less significant decrease in wind direction.

Some other available scenarios have no connexons with the particular circumstance. So this seems to be a reasonable option.

What are the most appropriate metric units to use to measure? 1. The distance to the door. 2. The amount of water in a glass. 3. The weight of the homemade chocolate chip cookie you wish you had. 4. The distance between you and the nearest stop light.

Answers

Answer:

1 and 4

Explanation:

because they are measures of nearness or farness(distance)

2. is a measure of volme while 3. is a measure of weight

What are an example of push factors and pull factors?

Answers

Examples of push factors include famine and war because they are pushing people out of the region they live in. Examples of pull factors include a better job market or good schools.

Answer:

shortage

Explanation:

Which of the following laid the foundation for cartography, the art
and science of mapmaking?
A. Ancient Egyptians
B. Early Europeans
C. Ancient Romans
D. Arabs
E. Ancient Greeks
tosth

Answers

It was E. Ancient Greeks

What is the need and significant of global peace ​

Answers

Answer:

Through international peace keeping under the aegis of the United Nations through the development and use of international law; creation of more international and regional institutions committed to promote peace, promotion of friendly cooperation for development among the member countries; popularization of peaceful .

Answer:

Working through young people across the world and key stakeholders ,global peace will become an ecosystem .

Explanation:

Keep it

early islam’s historical role in central asia

Answers

Answer:

Islam entered Central Asia, when during the 8th century there was a Muslim conquest.

definition of region

Answers

Answer:

an area or division, especially part of a country or the world having definable characteristics but not always fixed boundaries

Answer:

An area or division

Explanation:

What season is it in St. Petersburg, Russia on March 30th?

Answers

Answer: spring!

Explanation:

there is no real explanation :)

'Season' is described as the 'divisions of time across the year according to the changes experienced across various environmental factors.'

- The season that resides in St. Petersburg towards March-end would be the 'Spring Season.'

The season depends on various factors:

Change in the ecology of the location. Variation in the climate of the place. The alterations in the atmospheric situations throughout the year. The hours for which the place receives daylight.

As per the meteorological reports, the season in St. Petersburg during March is the Spring season.

The temperature ranges between 24.4°F and 35.6°F with a mean of 4hours of sunlight per day.. It is the very beginning month of the spring season and therefore, cold is experienced by the inhabitants during this time. A slight rainfall is also expected that allows the flora of the place to grow and bloom.  

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select the terms that describe a cultural influence on a region.

a. the city is bordered by water on three sides

b. forests are cleared to provide space to grow crops

c. female children may only attend school until they are ten years old

d. the tallest mountain on the continent is located here

e. new year’s eve is celebrated by shooting fireworks out into the sea

f. membership in club pretentious is restricted to individuals whose assets are greater than $1 million

Answers

c. female children may only attend school until they are ten years old

e.new year’s eve is celebrated by shooting fireworks out into the sea

Membership in Club Pretentious is restricted to individuals whose assets are greater than $1 million.

Female children may only attend school until they are ten years old.

New Year's Eve is celebrated by shooting fireworks out into the sea.

Forests are cleared to provide space to grow crops.

What aspects of the geography affect the France imports and exports?

Answers

Answer:

Large agro-industrial products, abundance natural resources, dairy products less of oil and natural gas.

Explanation:

Geographic factors that are based on location like climate, relief features, and soil type, market size affects the imports and exports of the country. France is the world's six largest leaders in agricultural power. France is a leading producer in wheat and accounts for the largest share in agricultural exports.  Apart from that France is the world's most popular tourist destination and sees visitors each year. The main imports of France are industrial chemicals, aircraft, and engines, electronic components, telecommunications, computer software. France has a Mediterranean climate and is known for the high quality of vines in the world.

what is population destiny

Answers

Answer:

Population density is the number of people per unit of area, usually quoted per square kilometre or square mile, and which may include or exclude for example areas of water or glaciers. ... Therefore, the worldwide human population density is around 7,500,000,000 ÷ 510,000,000 = 14.7 per km2 (38 per sq. mi.).

Answer:

Population density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, most of the time to humans. It is a key geographical term.

Explanation:

Population Density is a key to our survival on earth even though we don't realize it.

A thrust fault increases the thickness of the crust as it moves toward a continental interior in a mountain belt; yet the crust beyond the mountain front stays the same thickness. Isostasy would suggest that the area at the mountain front, where the thrust emerges, should ________ over time.

Answers

Answer:

subside

Explanation:

Isostasy is a geographical term which describes the condition of gravitational equilibrium that exists within the Earth's crust and mantle, there by, making the crust stays above a heights that relies on its physical attributes, such as thickness and density.

In Isostasy, its occurrence process involves principles of buoyancy in which an Earth crust apply stress on the less stronger mantle, such that for over a geological time moves laterally in a way that the load is contained by height adjustments.

Hence, Isostasy would suggest that the area at the mountain front, where the thrust emerges, should SUBSIDE over time.

8. What is the sum of (5 - 7i) and (-3 + 4i)?​

Answers

Answer:

2 - 3i

Explanation:

Add like terms:

(5 - 7i) + (-3 + 4i)

5 - 3 = 2

-7i + 4i = 3i

= 2 - 3i

Which word best describes early American foreign policy?

Answers

Answer:

I would say difficult

Explanation:

Because the American foreign policy was a brutal law.

Uniformitarianism means:________. a. neither the scientific past nor the future can be predicted because physical laws change over time. b. earth's surface, including the oceans and continents, has always been the same and will always remain unchanged. c. geologic processes on Earth all operate at roughly the same speed, which has not changed over time. d. geologic processes that operate today operated in the past at about the same speed.

Answers

Answer:

Uniformitarianism means:

d. geologic processes that operate today operated in the past at about the same speed.

Geologists study present geologic processes, whether they are sudden, like an earthquake, or slow, like the erosion of a river valley, to gain insight into the past. This is known as uniformitarianism.

Thus, option D is correct.

Who made uniformitarianism?

The theory of uniformitarianism was developed by Charles Lyell in the 19th century and is based on the writings of James Hutton. According to this hypothesis, the forces and processes that can be seen at the surface of the earth are the same ones that have sculpted the planet's terrain throughout natural history.

The belief that the same natural laws and processes that govern the universe today and have always governed it in the past and apply to all of it is known as uniformitarianism, also known as the Doctrine of Uniformity or the Uniformitarian Principle. Today, we accept uniformitarianism as genuine and understand that major catastrophes like earthquakes, asteroids, volcanoes, and floods are a regular part of the earth's cycle.

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What are the major river and mountain chain of the northeast region of the united states called?

Answers

Answer:

The mountains from  northeast region of the United States are called Appalachian Mountains.

The major river is Saint Lawrence River.

Explain how rays AB and AC form both a line and an
angle.

Answers

Answer:

Point A is between points B and C. Starting at point A and going past point B, you have ray AB. Starting at point A and going past point C, you have ray AC. If you think of angle BAC, it is a straight angle of 180 degrees!

Sample Response: An angle is defined as two rays with a common endpoint, so CAB (or BAC) is an angle. A line is described as an infinite set of points that extend forever in either direction, which these rays also do.

Explanation:

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Why is millet grown in the Sahel? A. It tastes better than wheat or barley. B. It is cheaper to grow than wheat or barley. C. It requires less water to grow than other grains. D. It has a longer cultivation cycle than other grains.

Answers

I would say C. It makes sense

Answer:

D. It has a longer cultivation cycle than other grains.

Explanation:

Which statements accurately describe soil? Check all that apply.

1)Soil condition directly affects crop growth.

2)Soil is used faster than it is replaced.

3)Soil cannot be replaced in a short time.

4)The amount of soil on Earth is unlimited.

5)The destruction of soil can take just minutes.


Answer is 1,2,3,5

Answers

Answer:

1, 2, 3, and 5 are the correct answers.

The correct statements are that-

Soil condition directly affects the crop growth.Soil is used faster than it is replaced.The soil cannot be replaced in a short time.The destruction of soil can take just minutes.

The correct set of options that match the statements above are as under 1, 2, 3 and 5.

Soil

If the soil is infertile, there will be poor or no growth of crops. If the soil condition is healthy, the crop growth will be good.

The soil replacement takes place gradually over a period of time due to natural events like wind, rain, etc.

The amount of soil on Earth is limited at a given point of time. Due to deforestation, the amount of soil is also getting reduced.

Destruction of soil can happen due to natural calamities like landslides, earthquakes, etc.

Hence, the statements as under 1, 2, 3 and 5 are correct about the characteristics of soil.

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A wooden block 72cm long,42cm wide and 36cm high,is to be cut into cubical blocks of side 7cm.What is the maximum number of cubical blocks obtained?

Answers

Answer:

  300

Explanation:

The larger block can be cut into 7 cm pieces for a total of 10 pieces along the 72 cm dimension, 6 pieces along the 42 cm dimension, and 5 pieces along the 36 cm dimension. That will yield a total of

  10 × 6 × 5 = 300 . . . cubical blocks

__

Remaining scraps could be fastened together to make additional blocks.

Answer:

300

is the maximum number of cubical blocks that obtained.

The first tidal energy station was built in?

Answers

Answer:

Esta planta de energía mareomotriz se encuentra situada en el estuario del río Rance, en Bretaña, en el norte de Francia. La instalación Rance Tidal fue la primera estación de energía de este tipo construida en el mundo y actualmente es una de las más grandes de todo el planeta.

Answer:

Rance Tidal Power Station was the first tidal energy station ever built in 1966.

In 1966, Électricité de France opened the Rance Tidal Power Station, located on the estuary of the Rance River in Brittany. It was the world's first tidal power station.

What moderates much of the air temperature over northwestern Europe?

Answers

Answer:The North Atlantic Drift Current moderates much of the air temperature over northwestern Europe, especially the British Isles.

Explanation:

how are the mississippi and amazon rivers differ? Check all that apply a- The Amazon acts as more of a barrier to movement b- The Amazon is much harder to get to c- The Amazon is surrounded by farmland d- the amazon has more industry around it Thanks!!

Answers

Answer:

A-The Amazon acts as more of a barrier to movement

b- The Amazon is much harder to get to

c- The Amazon is surrounded by farmlands

Explanation:

The Amazon river has surroundings which are largely underdeveloped with large amount of plant life. They also inhabit lots of animal life too.The surroundings are hard to get to due to poor road network.

The Mississippi River however is found in a more developed industrial area and lacks a dense plant population with good road networks.

Answer:

A-The Amazon acts as more of a barrier to movement  

b- The Amazon is much harder to get to  

c- The Amazon is surrounded by farmlands  

Explanation:

The Amazon river has surroundings which are largely underdeveloped with large amount of plant life. They also inhabit lots of animal life too.The surroundings are hard to get to due to poor road network.  

The Mississippi River however is found in a more developed industrial area and lacks a dense plant population with good road networks.

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